webapps: initial addition of splash screen icon downloading

chrome/android/java/res/values/dimens.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2014 The Chromium Authors. All rights reserved.
      Use of this source code is governed by a BSD-style license that can be
      found in the LICENSE file. -->
 
 <resources>
     <!-- Connection info popup dimensions -->
     <dimen name="connection_info_padding_wide">24dp</dimen>
     <dimen name="connection_info_padding_thin">16dp</dimen>
 
@@ skipping 52 matching lines @@
     <!-- Text size of the infobar message. -->
     <dimen name="infobar_text_size">16sp</dimen>
     <!-- Minimum width of an infobar. -->
     <dimen name="infobar_min_width">220dp</dimen>
     <!-- Margin between items in an infobar. -->
     <dimen name="infobar_margin">16dp</dimen>
     <!-- Width and height of the infobar icon. -->
     <dimen name="infobar_icon_size">36dp</dimen>
 
     <!-- App banner dimensions -->
-    <dimen name="app_banner_icon_size">48dp</dimen>
     <dimen name="app_banner_icon_spacing">16dp</dimen>
 
     <!-- Contextual search dimensions -->
     <dimen name="contextual_search_bar_height">56dp</dimen>
     <dimen name="contextual_search_text_size">18sp</dimen>
 
     <!-- Password generation popup dimensions -->
     <dimen name="password_generation_divider_height">1dp</dimen>
     <dimen name="password_generation_text_size">14sp</dimen>
     <dimen name="password_generation_horizontal_margin">10dp</dimen>
@@ skipping 101 matching lines @@
     <dimen name="find_result_bar_result_min_height">8px</dimen>
     <dimen name="find_result_bar_active_min_height">16px</dimen>
     <dimen name="find_result_bar_vertical_padding">8px</dimen>
     <dimen name="find_result_bar_min_gap_between_stacks">3px</dimen>
     <dimen name="find_result_bar_stacked_result_height">3px</dimen>
     <dimen name="find_in_page_separator_width">1dp</dimen>
     <dimen name="find_in_page_popup_width">375dp</dimen>
     <dimen name="find_in_page_popup_height">60dp</dimen>
     <dimen name="find_in_page_popup_margin_end">62dp</dimen>
 
+    <!-- Web app dimensions -->
+    <dimen name="webapp_splash_image_size">128dp</dimen>
+    <dimen name="webapp_home_screen_icon_size">48dp</dimen>
+
     <!-- Toolbar dimensions -->
     <dimen name="toolbar_tab_count_text_size_1_digit">12dp</dimen>
     <dimen name="toolbar_tab_count_text_size_2_digit">10dp</dimen>
     <dimen name="toolbar_height_no_shadow">56dp</dimen>
 
     <dimen name="location_bar_margin_top">5dp</dimen>
     <dimen name="location_bar_margin_bottom">5dp</dimen>
 
     <dimen name="toolbar_edge_padding">8dp</dimen>
     <dimen name="location_bar_url_text_size">17sp</dimen>
@@ skipping 83 matching lines @@
     <dimen name="default_favicon_size">16dp</dimen>
 
     <!-- Media UI dimensions -->
     <!-- The media_session_icon_size is just big enough to make sure Android doesn't discard the
          icon but otherwise, the icon is meant to be a flat color so it doesn't really matter. -->
     <dimen name="media_session_icon_size">48dp</dimen>
 
     <!-- Offline pages dimensions -->
     <dimen name="offline_page_item_vertical_spacing">40dp</dimen>
 </resources>